Games fine for small groups:
- Cults Across America (Lovecraftian hilarity
)
- Twilight Struggle (only played a bit so far, but very interesting; two persons only)
- Blood Feud: New York (three persons, especially -- very unstable; a 'guns under the table' game as mechanics favor attack and distances tend to be short)
Games only for larger groups (pref. seven):
- Empires in Arms (requires lots of time, too)
- Diplomacy